What are the definitions of waterfront and cliff section?

It means that one side of the road is close to the steep mountain side, and there is a big gap between the road surface and the cliff. The following are the precautions for crossing dangerous roads along the mountain: 1. When driving near water and cliffs, such as narrow bridges and roads, sharp bends and steep slopes, you should slow down in advance and keep a necessary safe distance from the roadside. 2. In case of oncoming traffic, stop slowly and let the right side of the vehicle face the water and cliff first. 3. Driving in rainy days and at night: slow down and observe the road conditions, and keep a safe distance from the car in front. Don't overspeed, retrograde or illegally occupy the road. 4. When the road is narrow and it is difficult to meet, you can slow down and stop. Don't force the meeting. 5. When going downhill: Don't slide in neutral, and pay attention to control the speed when going uphill.